package com.baizhi.springboot.web.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.net.URLEncoder;

@WebFilter(urlPatterns = "/*" ,filterName = "myfilter")
public class MyFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request= (HttpServletRequest) servletRequest;
        HttpServletResponse response= (HttpServletResponse) servletResponse;
        String requestURI = request.getRequestURI();
        if (requestURI.contains("/login.jsp") || requestURI.contains("/js/") || requestURI.contains("/css/") || requestURI.contains("/image") || requestURI.contains("getKaptcha")||requestURI.contains("/login")) {
            filterChain.doFilter(request, response);
        } else {
            Object admin = request.getSession().getAttribute("admin");
            if (admin != null) {
                filterChain.doFilter(request, response);
            } else {
                response.sendRedirect("/login.jsp?message="+ URLEncoder.encode("请先登录在访问","utf-8"));
            }
        }
    }

    @Override
    public void destroy() {

    }
}
